Jack Dempsey Cassini (October 26, 1919 – September 20, 2010) was an American professional baseball infielder, manager and scout. Born in Dearborn, Michigan, he was a six-time stolen base champion during his minor league playing career (1940–41; 1946–55) and stole 378 bases lifetime.Cassini threw and batted right-handed, stood 5'10" (1.78 m) tall and weighed 175 pounds (79 kg).